19994667

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{857}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 33606144

約数和(自身を除く): 13611477

約数列:

[1, 3, 7, 11, 21, 33, 77, 101, 231, 303, 707, 857, 1111, 2121, 2571, 3333, 5999, 7777, 9427, 17997, 23331, 28281, 65989, 86557, 197967, 259671, 605899, 952127, 1817697, 2856381, 6664889, 19994667]

約数ペア:

[(1, 19994667), (3, 6664889), (7, 2856381), (11, 1817697), (21, 952127), (33, 605899), (77, 259671), (101, 197967), (231, 86557), (303, 65989), (707, 28281), (857, 23331), (1111, 17997), (2121, 9427), (2571, 7777), (3333, 5999)]